#!/bin/sh $NFT add table t || exit 1 $NFT add chain t c1 || exit 1 $NFT add chain t c2 || exit 1 # kernel should return EEXIST $NFT rename chain t c1 c2 if [ $? -eq 0 ] ; then echo "E: Renamed with existing chain" >&2 exit 1 fi # same, should return EEXIST $NFT 'rename chain t c1 c3;rename chain t c2 c3' if [ $? -eq 0 ] ; then echo "E: Renamed two chains to same name" >&2 exit 1 fi